8:50 p.m. (1850 GMT, 2:50 p.m. EDT)
Greek Finance Minister Yanis Varoufakis concedes that time is pressing for the country to secure a deal, but believes an agreement that is acceptable for all can still be reached.
Greece is in talks about what reforms it must make to get more loans. It needs outside financial help if it is to meet debt repayments as soon as June 30.
After a eurozone meeting failed to reach a deal, Varoufakis said the Greek government accepts that the country needs fundamental reforms. He said, however, that those pursued in recent years have led to huge hardship, including high debt, unemployment, poverty and emigration.
"There is no question that Greece needs to make adjustments," he said. "The question for us is: What kind of adjustments?"
8:15 p.m. (1815 GMT, 2:15 p.m. EDT)
Amid concerns that Greece could fall out of the euro, at least 6,000 people have gathered outside Parliament in central Athens in a peaceful demonstration backing the country's membership in the currency zone and the European Union.
Scores of demonstrators, waving Greek flags climbed the marble staircase leading to the threshold of the Parliament building. Among the crowd were several opposition lawmakers.
Meanwhile, police blocked a planned march by 200 anarchists in the area. The anarchists are protesting against capitalism, the government and Greece's creditors.
On Wednesday evening, about 7,000 people held an anti-austerity rally outside Parliament, waving the flags of Greece and the governing radical left Syriza party.
8:00 p.m. (1800 GMT, 2:00 p.m. EDT)
A summit of the eurozone's 19 leaders has been called for Monday to find a breakthrough in Greece's bailout talks following another failure at a meeting Thursday.
European Council President Donald Tusk said he had decided to convene a eurozone summit to "urgently discuss the situation of Greece at the highest political level."
His statement came after the eurozone's top official, Jeroen Dijsselbloem, said no progress was made in discussions held Thursday in Luxembourg.
Greece needs outside financial help if it is to meet debt repayments this summer, starting with 1.6 billion euros it owes on June 30.
7:55 p.m. (1755 GMT, 1:55 p.m. EDT)
The eurozone's top official, Jeroen Dijsselbloem, says bailout talks with Greece on Thursday yielded very little and no agreement is in sight yet.
He says Greek Finance Minister Yanis Varoufakis presented too few measures that were credible and serious at a meeting Thursday.
He says the talks over the last week have not progressed and "time is running out."
Dijsselbloem says it's up to the Greeks to submit new proposals in the coming days.
Greece is in talks to get more loans from its creditors — which include the eurozone states and the International Monetary Fund. Without help, Greece will struggle to make a debt repayment on June 30.
7:40 p.m. (1740 GMT, 1:40 p.m. EDT)
A leading European Union official says Greece and its international creditors have failed to secure a bailout deal that would help the country avoid a debt default at the end of the month.
Valdis Dombrovskis, an EU vice-president whose remit includes the euro, wrote on his official Twitter account that there was no deal at the meeting of the eurozone's 19 finance ministers in Luxembourg.
He wrote that there was a strong signal for Greece "to engage seriously in negotiations."
He added that the group of eurozone finance ministers "stands ready to reconvene at any moment."
7:00 p.m. (1700 GMT, 1:00 p.m. EDT)
Despite the uncertainty surrounding Greece's financial future, European stock markets recovered Thursday, tracking gains on Wall Street, where investors were relieved to hear that the Federal Reserve is not in a hurry to raise interest rates.
The Stoxx 50 index of leading European shares closed 0.6 percent higher while the main index in Athens ended up 0.4 percent. Both had opened lower.
The focus when European markets reopen Friday will likely be on Greece as investors will have a chance to digest the details from the meeting of eurozone finance ministers in Luxembourg, which is still ongoing.
4:40 p.m. (1440 GMT, 10:40 a.m. EDT)
German finance chief Wolfgang Schaeuble has not offered any indication that Greece's creditor countries are willing to ease their demands in the talks.
Ahead of the meeting in Luxembourg, he said that "we're waiting for Greece to put forward proposals, which we've been waiting for some time, and waiting patiently, but the time is getting shorter."
"It's up to Greece alone to fulfill what has been agreed."
Greece and its creditor countries are in tough talks over the conditions for unlocking more bailout loans. Without the aid, Greece will struggle to make a debt repayment on June 30. A failure to pay would deepen the country's economic and financial woes and could be a step toward leaving the euro currency.
4:20 p.m. (1420 GMT, 10:20 a.m. EDT)
European diplomacy is kicking into gear as leaders try to press Greece to compromise in the stalled bailout talks.
The president of Cyprus, traditionally a close ally of Greece, has had a long phone call today with Angela Merkel, the leader of Germany, one of Greece's main creditors and toughest negotiators.
Cyprus' Nicos Anastasiades then spoke with both Greek Prime Minister Alexis Tsipras as well as Greece's President Prokopis Pavlopoulos.
News of the talks came in a written note from the Cypriot government's spokesman, Nicos Christodoulides. He did not disclose the content of the talks with Greece's leaders.
3:45 p.m. (1345 GMT, 9:45 a.m. EDT)
The meeting of the eurozone's 19 finance ministers has officially begun.
Finnish Finance Minister Alexander Stubb has tweeted: "The #Eurogroup begins."
Will the meeting be as brief as Stubb's tweet?
It's unclear whether Greek Finance Minister Yanis Varoufakis is armed with fresh proposals to break the impasse with international creditors.
2:50 p.m. (1250 GMT, 8:50 a.m. EDT)
The eurozone's top official has his doubts about the prospects of any progress in bailout negotiations with Greece.
Arriving for a meeting of the eurozone's 19 finance ministers, Jeroen Dijsselbloem says he isn't sure there'd be any progress during the talks later: "We will not have a deal if it's not a credible deal."
Dijsselbloem says the eurozone wants "further steps from the Greek side because we need to have a solid deal. It needs to hold up in the coming years to be credible."
Greek Finance Minister Yanis Varoufakis, meanwhile, said he was hoping his government's plans will win backing from other eurozone states.
"The purpose is to replace costly discord with effective consensus," he said.
1:55 p.m. (1155 GMT, 7:55 a.m. EDT)
The head of Germany's national central bank says "there's not much time left" for a deal to rescue Greece's finances — and that it's the Greeks who need to take the next step.
Bundesbank head Jens Weidmann said in an interview with three European newspapers that "now it's up to the Greek government to decide in what direction they want to lead their country."
Greece and other eurozone governments are in talks over conditions for more loans to enable Greece to pay its debts. A default could lead to the country leaving the euro.
Athens has balked at requests to cut public spending and run budget surpluses not counting interest payments, arguing that would smother growth.
Weidmann said a Greek withdrawal from its bailout agreement and failure to make debt repayments "would have consequences for Greece that are difficult to control."
12:15 p.m. (1015 GMT, 6:15 a.m. EDT)
Among officials arriving in Luxembourg for the keenly awaited eurozone meeting there is a distinct lack of optimism over the prospects of a Greek deal.
Pierre Moscovici, the European Union's top economy official, says the meeting will be "very difficult" but that he hopes everyone turns up "with cool heads and the political will to succeed."
While reiterating that the EU's executive arm will do what it can do get a deal, he acknowledged that a Greek exit from the euro was being discussed by some.
"The stakes are extremely high for the Greek people and all of Europe," he said.
Belgian Finance Minister Johan Van Overtveldt said it all depends on the Greeks: "If there are reasonable proposals, we will certainly discuss them."
Greek Finance Minister Yanis Varoufakis, who said this week he wouldn't be bringing any new proposals to the meeting, refused to comment. Jeroen Dijsselbloem, the eurozone's top official, also declined to speak.
11:40 a.m. (0940 GMT, 5:40 a.m. EDT)
Greek stocks are leading Europe markets lower as investors worry over the impasse in the country's bailout talks.
The main index on the Athens Stock Exchange was more than 3 percent lower — bringing its losses in the past week to nearly 20 percent. Elsewhere in Europe, the main stock indexes in Germany and France were down about 1.1 percent.
Nick Kafkas, head of analysis of Merit Securities, says investors are paying close attention to today's meeting of eurozone finance ministers: "If there is no spirit of cooperation, I think we'll slip even lower."
Greece's sovereign borrowing rates remained high — an indication of concern about default, as Greece faces a debt repayment on June 30 it likely cannot afford. The yields for Greece's 10-year, 5-year, and 2-year bonds have all risen sharply this week to rates of 13, 20 and 30 percent.
10:45 a.m. (0845 GMT, 4:45 a.m. EDT)
The leader of Chancellor Angela Merkel's parliamentary caucus says he hopes the Greek government will "see sense" and reach an agreement with its creditors.
Volker Kauder told the German Parliament it's up to Athens to comply with the conditions for its bailout. He said that "we have really done and offered everything possible, but now it is Greece's turn."
He said that Europe will have problems "if everyone thinks he can do and not do what he wants and that he can blackmail the others."
Kauder said Thursday: "this Greek government is acting against the interests of its people. You have to tell the population how things really are so that you can change things."
10:15 a.m. (0815 GMT, 4:15 a.m. EDT)
While his country is locked in talks with its European creditors, Greek Prime Minister Alexis Tsipras is traveling to Russia on Thursday to meet President Vladimir Putin.
His visit has given ground to speculation that the Greeks could be seeking Russian loans.
Asked by The Associated Press whether Russia is going to offer Tsipras money on his visit, Russian Deputy Prime Minister Arkady Dvorkovich said he "cannot comment on specific decisions."
Greece is in talks with its creditors to get new loans. Without the loans, it will struggle to make a 1.6 billion euro ($1.8 billion) debt repayment to the International Monetary Fund on June 30.
10:10 a.m. (0810 GMT, 4:10 a.m. EDT)
German Chancellor Angela Merkel says the eurozone is in a stronger position than it was five years ago as it grapples with the renewed crisis in Greece.
Merkel noted during a speech to the German Parliament on Thursday that Germany's aim has always been for "Europe to come out of the crisis stronger than it went into it."
She says the continent has come a long way — "how far can be seen in the fact that Europe is coping very differently with the current situation in Greece than it would have done five years ago, at the beginning of our reform measures."
Merkel says "Greece has enjoyed an unprecedented amount of European solidarity in the last five years." She stressed countries must make efforts of their own in exchange for aid.
9:35 a.m. (0735 GMT, 3:35 a.m. EDT)
German Chancellor Angela Merkel is pressing Greece to deliver on commitments to carry out reforms, stressing before a meeting of eurozone finance ministers that she wants the country to remain in the common currency.
Merkel said in a speech to the German Parliament Thursday that Greece's government in February "committed itself to comprehensive structural reforms. These must now be tackled with determination."
Merkel stressed that "Germany's efforts are directed to Greece remaining in the eurozone." She reiterated that "where there's a will, there's a way — if the political leaders in Greece show this will, an agreement with the three institutions is still possible." That was a reference to Greece's international creditors.
Greece needs to unlock loans from its creditors before June 30, when its bailout program expires.